
late = input()
i = int(late)
if i >= 400 and i <= 599:
	print("8")
if i >= 600 and i <= 799:
	print("7")
if i >= 800 and i <= 999:
	print("6")
if i >= 1000 and i <= 1199:
	print("5")
if i >= 1200 and i <= 1399:
	print("4")
if i >= 1400 and i <= 1599:
	print("3")
if i >= 1600 and i <= 1799:
	print("2")
if i >= 1800 and i <= 1999:
	print("1") late = input() late input() input i = int(late) i int(late) int late if i >= 400 and i <= 599:
	print("8") i >= 400 and i <= 599 i >= 400 i 400 i <= 599 i 599 print("8") print "8" if i >= 600 and i <= 799:
	print("7") i >= 600 and i <= 799 i >= 600 i 600 i <= 799 i 799 print("7") print "7" if i >= 800 and i <= 999:
	print("6") i >= 800 and i <= 999 i >= 800 i 800 i <= 999 i 999 print("6") print "6" if i >= 1000 and i <= 1199:
	print("5") i >= 1000 and i <= 1199 i >= 1000 i 1000 i <= 1199 i 1199 print("5") print "5" if i >= 1200 and i <= 1399:
	print("4") i >= 1200 and i <= 1399 i >= 1200 i 1200 i <= 1399 i 1399 print("4") print "4" if i >= 1400 and i <= 1599:
	print("3") i >= 1400 and i <= 1599 i >= 1400 i 1400 i <= 1599 i 1599 print("3") print "3" if i >= 1600 and i <= 1799:
	print("2") i >= 1600 and i <= 1799 i >= 1600 i 1600 i <= 1799 i 1799 print("2") print "2" if i >= 1800 and i <= 1999:
	print("1") i >= 1800 and i <= 1999 i >= 1800 i 1800 i <= 1999 i 1999 print("1") print "1" i = int(late) int(late) i late = input() input() late

late = input()
i = int(late)
if i >= 400 and i <= 599:
	print("8")
if i >= 600 and i <= 799:
	print("7")
if i >= 800 and i <= 999:
	print("6")
if i >= 1000 and i <= 1199:
	print("5")
if i >= 1200 and i <= 1399:
	print("4")
if i >= 1400 and i <= 1599:
	print("3")
if i >= 1600 and i <= 1799:
	print("2")
if i >= 1800 and i <= 1999:
	print("1")
